These groups look similar and are distinguished mainly by the following points: (i) the presence or absence of a fibrous structure in the cytoplasm, and (ii) the structure of the mouth area. Since these characteristics cannot be seen clearly in this video, it is difficult to determine to which genus this ciliate belongs.

These groups look similar and are distinguished mainly by the following points: (i) the presence or absence of a fibrous structure in the cytoplasm, and (ii) the structure of the mouth area. Since these characteristics cannot be seen clearly in this video, it is difficult to determine to which genus this ciliate belongs.